Wave transmission of power



Oct. 6, 1925.

R. G. HANSON WAVE TRANSMISSION 0F POWER Filed Sept. 26,' 1923 2 Sheets-Sheet 1 f II )NVENTOR RxcHRD GRnENwoo Anson i L A ATTORNEY:

Oct. 6, 1925. 1,556,439

R. G. HANsoN wAvE TRANsuIssIoN or` Powsn Filed sept. 26. 1923 2 sheets-shut' 2 1.9 Y 1.9 if 1s .aNvEwroR Rim-ARD GREENwonD HANsnN ATTRNEYS whichlthefollowingisa'lspeeiticationg .i y Thisf invention relates? to' what, iS .IIQV

Patented Oct. 6, v1925]e RICHARD GREENWOOD Hanson, or'sTArFonD, ENGLAND.r-

i Y WAVE 'maNsiirrsslolforPoivre;`

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Y ,Be it fiorinihat I,-.R @HARD Y HANs'on, 15a"l subject, of;V the King; oi `(irieat- Britain, and. :resident of ,Stafford5` @Oil-11W OfStfQrd, Englildharenve @di ing.' certa-impractical' problems, It willogbe certain new and useful' Improvementsilie ing Y to Waye Transmission of "Power,

known generall7 as l'wave transmissionbot power i and, hasV reference 'to the* system 'of power'transmission dis'clos'ed'in the speclhcaneseo u alternating pressure 'wavleiset up and. it

these pressure waves er, ,transforlnf'them from lWaves of one amplitudeor':pressure to' waivesof another,r amplitude or pressure.y

Iliaizev found thati'theseobjects can loeuae-lVV complished f b5/" interposing. f-between the source'of generation of lthe'alterna,tingpres# sure waves and. the ...place of. their applica-4 tion aV member."` having. a .leak` andy I have foundthat 'bot-liy the ,magnitude of Ithe leak-I that isfitsl cross" seetional ,areanand also lthe length ,ofthe leakage path ,'arefrhaterial :faetors in v design; l., In other 4 words a longfleakf age path of confll?alatively.plarge.l sectional area willproduce the vsame .efectasy fa' shorter r leakagepath vofffsmaller sectional area. One

application of the l inventionis- 1:91'` thi?V tec-tien 0f vpaekinfgs in .wave transmisseh aP-i paratus.` ,p Ithas lbeen found that. packings deteriorate rely rapidlyunder theinfluence f of the alternatinglfpressures-butzlast -a oon-v siderab'le time. whensubjected to` steady pressures `and accordingfto the'zpresent invjen;

tion if, what for` convenience i mayv hey termed,

a transformer bush :is interposedpbetween f the source of thealternatingv pressurewaves andithepaclring these pressure waves can be damped.downso-thatthe packing is,A subi- .jected to f a. steady :mean pressure consider# ably .lower 'than' 'thejfpressuref infthewaye transmission line.v Inforderto eliminate'the 4pressure fluctuations;altogether the y'trans- Yttornru-:r or resistancefhuslfwould needftobe of, or; `*beyond a certain- :length t for ,fa given .area --of. leakage path .but .itfw/ill.` be; found ,een.alabama@ariehfsf-awake? i randfoiffiiierealising"itsseetional[area:the/

entivention consists;ofameans'or dampinfhydraulio apparatus by vinterposing bef.V tween the source of pressure and its poi-ntfv application what, as, beforeV menf ,ioned'7 may he termed a transfer-menorresistance*bush. havingr a leakage path.; l', "It, ,follows l,that providing 4means for, varying fthe'Y length: and/or sectionalvarea offtheleakage path variable eii'eets oanpbe obtained as thebuslr willl operate'las a variableresistance..Y y

Y ,In order that the inventionmaybe clearlyunderstood severa-1 ,embodiments ofgthe vsameY i will-now be described. by aid of the'aecol'nf panving drawingslnwhich :f1

.-Figf 1 is a diagramshowingl applied .as a 4transformer.adaptedY to iriserted :between theTL generator andY the appa; ratus tolbe operated for varying the amplia' tudeof the wave; f

the4 Ainventionv f Figures 2, f3 fand-4, showthe 1 plied to a rock vdrill and a screwdown valve respectively as a means for protectingfthe packing from, alternatingj'rpressures which asla,.,`cohsequenee l of ,.the;v means. shown, are transformed (to substantially pressures at the paekings.

x The lpractieal :application tlieintention shownlin the..y drawings *.takesf the forni. of a member disposedin thepath ofA thepressure -wayeswhich memberis suchasto permitzthe f pressurewaves to flow past itbyleakage only,f `the extent y.of such leakage .being de; pendent .upon the final Wavexamplitude gand pressure required.y In Figure; 1, th is meme ber'takges the ormgof a slidingpiston 1 ha'ivf' CII . tle inner. endet .Snell .bneb beingobnped eo tion' of a nut 9.

'tint fend-int enen 'eldinieneon ne. .to il avfs'to abut against thefatlijttcent end `of' peeking Y ofi, 'nos .shown in Figure ttntt in the. yopen side .of .the pack'inV 4and .bear n'eeinet tbe bettoinot tnereeeee The desited leeltnse-in. 'tine eitnnnle'lney be eb.- tnined, either by 'allowing for .e piede/.telfininedeleokneee in t between the Yenen-ging- Snfnloee .off the bneli dnd tidel .Spindle er -by nreyiding n Speeiel. leakage ,nath ne illne- .tlntedin Figure l,f

.In Figure. et tbe invention is shown .en--

pliedprotective medium for 'the packingoi .Sonnyy donn ynlye" .for ,use in 'oonneo tion with Wave trnneinieeion of noyei- The Seifen down ynlye febonn'eoninrieee. e bolloW body 8 iyliiob. ie bored ontto .Provide e Vstepped intenten et toner diameters the longed. diameter beine et the top endl of-'tlie body nndthteeded internelly for the recep- Tbe portion of the bore bovine' tbe ernelle'et dinineter opens ontfnto e elolinben l0 Wbion is adapted' .te .eentnin tbe. blend of, tbe ynlye llthe. Sentine tot Wbioli ie tonned .in the bottoni of tbie en` l'argedz chamber, and around the edge ofan ontlet `opening 12.- Tlie inlet Il?? for the Difensore fluid lende into tbeenlnte'ed. ebendn bet ftoin tlieeidennd nboye tbe Sen-ting ieee of tbe ynlye- The Valve is first positioned in the liol- 10W onleilg frein-tbe top end An nnnnlnl' packing Washer 14; is next ,inserted .suvh Weeber Seating nnen the bottone fennnlnr 'Sn-tfno@ lof tbe.. stepped bore .having .tbe third lnrseet .dinineten An '.nnnnler'leeye 1.5 ie nent. ineejifted'elen frein the top end et the @eine tbe outside of Wboll Sleeve ise'tenioed to. conform to the stepped interior of the bore of the body'i'whieh it serves toill, one of its under fnoee. oiiooein's tbe. nfoiernentioned ennnlnr peeking nennen The intenter of this eleeye is bere( ont .tiene ite lignei? endion ennioninntely 'helft ite .lengtb tge remaining Portion er lenen belt being boitedfeo ne tio oonetitnte n Werking lit .for tbeynlye enindle einen .it ,einbreefejel In 'tbe i'eoeee eo provi-ded in the nnper belt of'. rtbie. nnnnliei -eleeye' then {ntted en. nnnnlenineniberfl .tbe .bene .of ivlieli'n kt e shapedA to closely-conform to the top of the U Washer upon Whieh rests Whilst 'the top side of' this saddle ring is fiat and such Snddle tins ie adapted to. be ioneeeed downneeinet the U Weeber byv ofthe .diete Iiientinied' nnt nntil' tbe ton. .et fljnt .enttnee et tbe.. 'Saddle eine teedeelneh with tbe. ton edge.. of .tbe nnnnlnn .el'eeve- 'When the .nnt ie noeitenediby .bein eoeewedfdown intotne threaded, teoefee en `the. tinnen .end ot the yelye bodyI .it ie l'oeleed in petition. byniee-ne of .n leek'. nntf engaging the .exterior of tbe nnt nbiob look not. ie no1-tened tightly down against. the top' .tene et tbe.- ynlye biedytbie exemple the. .annuler `.inennbtn lie Serves te `denne the presente fwnyee tbe' rei quired' leakage being enen to. tnnneforin the rpressure from an alternating high presente. to. nenbetentinlly .oontnnone .end lower ntenenre en .the-,Side Yet the .member ebene tine peeking .ile eitnnted- W'lint and' .desire to Seonre, by Lettere Pnl-tent ier#` lln, yyeye tinnenieeien newer nppnretns ineens. for ttnnetonnng tbe etnnlitnde. end pressure of nl'tellneting .Presente Weten eoinprising ,a lealfIa-gel path'interposed between tbe -Sonroeot Presente oener'ntion and' tbe n nosed. '.etiyeen tbe Sonnen of prendete generetinn end .its point of npnlieetientbe .efiootnfe nnenof lWliioli lenling'e tnntli is variable In Wave transinissioii power apparatus menne, .for .ttenetorniing tbe amplitude .end nieeenre of. nlteineting pressure 'weyee oninnneing n ttenefoiin 1 been in tlie torni otn Sliding pieten provided with. elenlenge notti end; inteinoeed between tbe eonree et' preeennennd ite point. ot ennlieeton end ritenne .tot .edinsting the `position et Seid .Sliding tn ettbe leelengenetn toitbe naines/.e .ene 'fiedf -In were .tte eniieeion .newer enneietne ineens ten ftienetonnng tbel. einnltlnde .end Panni-e. etnltennetinoi'nteeenfe 'et-.tenet nnen .nenne `loeing interposed between the source oflrvpressure generation and the point where the pressure is applied. v

6. In wave transmission power apparatus 5 means for transforming the amplitude and pressure of alternating pressure waves comprising a transformer bush in the form of a Sliding piston provided with a leakage path in the form of a longitudinal groove suoli bush `being interposed between the source of 10 pressure generation and its point of appli-v cation and means for adjusting the position of said sliding piston to Vary the length of the leakage path for the purpose specified.

In witness whereof I aix my signature. RICHARD VGREENWOOD HANSON. 

